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Related papers: Explaining 650 GeV and 95 GeV Anomalies in the 2-H…

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In this study, we propose the interpretation of a 650 GeV excess observed at the Large Hadron Collider (LHC) by the CMS Collaboration in terms of the production of a CP-odd (or pseudoscalar) Higgs boson A, with mass around 650 GeV, decaying…

High Energy Physics - Phenomenology · Physics 2025-10-17 Ayoub Hmissou , Stefano Moretti , Larbi Rahili

We show how the 2-Higgs Doublet Model (2HDM) Type-I can explain some excesses recently seen at the Large Hadron Collider (LHC) in $\gamma\gamma$ and $\tau^+\tau^-$ final states in turn matching Large Electron Positron (LEP) data in $b\bar…

High Energy Physics - Phenomenology · Physics 2025-12-12 Akshat Khanna , Stefano Moretti , Agnivo Sarkar

In this work, we explore how the 2-Higgs Doublet Model (2HDM) Type-I, extended by an inert doublet, can provide an explanation for the recently observed excesses at the Large Hadron Collider (LHC) in the $\gamma\gamma$ and $\tau^+ \tau^- $…

High Energy Physics - Phenomenology · Physics 2026-01-30 Ayoub Hmissou , Stefano Moretti , Larbi Rahili

Recent experimental hints from the Large Hadron Collider (LHC) in di-photon and partially in the $\tau^+\tau^-$ final states suggest the possible existence of an additional Higgs boson with a mass around 95 GeV. Interestingly, these…

High Energy Physics - Phenomenology · Physics 2026-03-24 Rachid Benbrik , Mohammed Boukidi , Khouloud Kahime , Stefano Moretti , Larbi Rahili , Bassim Taki

Recent searches by the CMS collaboration at the Large Hadron Collider (LHC) in the `diphoton plus $b\bar{b}$ final state' have revealed an excess near 650 GeV, which might indicate the presence of a (broad) heavy resonance decaying into a…

High Energy Physics - Phenomenology · Physics 2025-07-01 Rachid Benbrik , Mohammed Boukidi , Khouloud Kahime , Stefano Moretti , Larbi Rahili , Bassim Taki

We suggest an explanation for and explore the consequences of the excess around 95 GeV in the di-photon and di-tau invariant mass distributions recently reported by the CMS collaboration at the Large Hadron Collider (LHC), together with the…

High Energy Physics - Phenomenology · Physics 2024-05-06 Alexander Belyaev , Rachid Benbrik , Mohammed Boukidi , Manimala Chakraborti , Stefano Moretti , Souad Semlali

Recent reports from the Large Hadron Collider indicate two excesses: one in the lighter Higgs mass region around 95 GeV, and another in the rare $Z \gamma$ final state of the Standard Model (SM) 125 GeV Higgs decay. These anomalies are…

High Energy Physics - Phenomenology · Physics 2025-07-03 Abdesslam Arhrib , Khiem Hong Phan , Van Que Tran , Tzu-Chiang Yuan

We propose an explanation for the observed excesses around 95 GeV in the di-photon and di-tau invariant mass distributions, as reported by the CMS collaboration at the Large Hadron Collider (LHC). These findings are complemented by a…

High Energy Physics - Phenomenology · Physics 2024-12-25 Rachid Benbrik , Mohammed Boukidi , Stefano Moretti

In the search for a light Higgs boson, the ATLAS and CMS experiments have observed excesses in both the diphoton ($\gamma\gamma$) and di-tau-pair ($\tau^+\tau^-$) decay channels at about $95$ GeV. The LEP collaboration has also previously…

High Energy Physics - Phenomenology · Physics 2024-10-16 Brahim Ait-Ouazghour , Mohamed Chabab , Khalid Goure

The CMS collaboration reported an intriguing \sim 3 sigma (local) excess at 96 GeV in the light Higgs-boson search in the diphoton decay mode. This mass coincides with a \sim 2 sigma (local) excess in the bb final state at LEP. We present…

High Energy Physics - Phenomenology · Physics 2020-02-18 T. Biekötter , M. Chakraborti , S. Heinemeyer

We discuss a possible explanation of the recently observed diphoton excess at around 750 GeV as seen by the ATLAS and CMS experiments at the Large Hadron Collider. We calculate the cross section of the diphoton signature in 2-Higgs Doublet…

High Energy Physics - Phenomenology · Physics 2016-04-06 Stefano Moretti , Kei Yagyu

Charged Higgs bosons are common predictions in most extensions of the Standard Model (SM) Higgs sector. Therefore, their observation would elucidate the nature of the Higgs sector. Motivated by the ATLAS collaboration's latest analysis…

High Energy Physics - Phenomenology · Physics 2024-09-23 Abdesslam Arhrib , Mohamed Krab , Souad Semlali

The CMS collaboration reported an intriguing $\sim 3 \, \sigma$ (local) excess at $96\;$GeV in the light Higgs-boson search in the diphoton decay mode. This mass coincides with a $\sim 2 \, \sigma$ (local) excess in the $b\bar b$ final…

High Energy Physics - Phenomenology · Physics 2019-10-16 T. Biekötter , M. Chakraborti , S. Heinemeyer

The CMS collaboration reported a $\sim 3 \, \sigma$ (local) excess at $96\;$GeV in the search for light Higgs-boson decaying into two photons. This mass coincides with a $\sim 2 \, \sigma$ (local) excess in the $b\bar b$ final state at LEP.…

High Energy Physics - Phenomenology · Physics 2021-05-25 S. Heinemeyer , C. Li , F. Lika , G. Moortgat-Pick , S. Paasch

Searches for the Standard Model Higgs boson by the four LEP experiments found excess events in two mass ranges: a 2.3 sigma excess around 98 GeV, and an 1.7 sigma excess around 115 GeV. The latter has been discussed widely in the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Manuel Drees

In this article, we demonstrate that the unexpected peak at around $95 \, {\rm GeV}$ as seen recently by CMS in the di-photon final state can be explained within the type-I~two-Higgs-doublet model by means of a moderately-to-strongly…

High Energy Physics - Phenomenology · Physics 2018-04-18 Ulrich Haisch , Augustinas Malinauskas

The Large Hadron Collider is shown to have great scope for a light charged Higgs discovery, in the context of the CP-violating type-I two Higgs doublet model. This scenario with similar masses of $H^\pm$ and W was suggested by the puzzling…

High Energy Physics - Phenomenology · Physics 2014-01-15 Wolfgang Mader , Jae-hyeon Park , Giovanni Marco Pruna , Dominik Stöckinger , Arno Straessner

The complex two-Higgs doublet model (C2HDM) is one of the simplest extensions of the Standard Model with a source of CP-violation in the scalar sector. It has a $\mathbb{Z}_2$ symmetry, softly broken by a complex coefficient. There are four…

High Energy Physics - Phenomenology · Physics 2024-07-16 Thomas Biekötter , Duarte Fontes , Margarete Mühlleitner , Jorge C. Romão , Rui Santos , João P. Silva

We explore the possibilities in two-Higgs-doublet models (2HDMs) of Type I and Type II for Higgs states with mass below about 60 GeV, i.e. less than half of the ~125 GeV mass of the observed SM-like Higgs boson. We identify the latter as…

High Energy Physics - Phenomenology · Physics 2015-04-29 Jeremy Bernon , John F. Gunion , Yun Jiang , Sabine Kraml

Searches for a charged Higgs boson ($H^\pm$) decaying to a charm quark and a bottom quark ($H^\pm \to cb$) have been carried out at the Large Hadron Collider (LHC) in the decay of top quarks ($t\to H^\pm b$). In a recent search by the ATLAS…

High Energy Physics - Phenomenology · Physics 2022-07-13 A. G. Akeroyd , Stefano Moretti , Muyuan Song
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